首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Ausbruchventil zum Verschliessen eines Ringraumes zwischen einem Bohrgestänge und der Bohrlochwand
摘要
申请公布号
DE69316142(T2)
申请公布日期
1998.06.10
申请号
DE19936016142T
申请日期
1993.10.07
申请人
NORSK HYDRO ASA, OSLO, NO
发明人
SANGESLAND, SIGBJORN, N-7039 TRONDHEIM, NO
分类号
E21B21/10;E21B33/127;(IPC1-7):E21B21/10
主分类号
E21B21/10
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METAL CASTING PROCESS
IMPROVEMENTS IN OR RELATING TO VEHICLE WHEELS
HARVESTERS
IMPROVEMENTS RELATING TO THE TREATMENT OF SUSPENSIONS
IMPROVEMENTS IN CONTAINERS AND CONTAINER TOPS
BENDING MACHINE FOR BARS,WIRES AND SECTIONS
DRUCKMITTELSTEUERUNG FUER HYDRAULISCHE SERVOANLAGEN
N,N'-DISUBSTITUTED DIAZACYCLOALKANES ALKYLATED AT CARBON ATOMS OF THE HETEROCYCLUS AND PHARMACOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF
SPINNING FROM LOW VISCOSITY MELTS
A PROCESS FOR THE PRODUCTION OF POLYLACTAM ARTICLES HAVING IMPROVED PROPERTIES BY ROTATIONAL MOLDING
PROCESS AND APPARATUS FOR SPRAY DRYING EGG WHITES
COVER FOR A LAVATORY SEAT
MOLD FOR CASTING BUILDING COLUMNS
METHOD AND APPARATUS FOR MAKING FLEXIBLE STRIPS OF MATERIAL HAVING A PILE OF HOOK SHAPED ELEMENTS
A PALLET FOR TRANSPORT AND UNLOADING OF CRATES
SOLUTION PROCESS FOR THE PREPARATION OF POLYIMIDES FROM DIAMINES AND BISIMIDES
FLARE IGNITION SYSTEM
AN ELECTRIC TERMINAL
PHARMACEUTICAL COMPOSITIONS CONTAINING BIS(P-CHLOROPHENOXY)ACETIC ACID OR ESTERS OR SALTS THEREOF
PROCESS AND APPARATUS FOR REMOVING PROTIUM AND TRITIUM FROM HEAVY WATER
